• I have 2 gold crowns. What is the gold value from these? – From Rob in Des Moines, Iowa

• I have 5 lbs of very small pieces of dental scrap that came from a retired dentist. – from Larry in Phoenix, Arizona

• I have several teeth and crowns with gold filling that have been extracted. I would like the gold recovered and returned as a single nugget and returned. – From Stacy in Raymond, Illinois

• I have about 10 grams of a three tooth bridge, two gold caps and one gold tooth. – From Matt in Chicago, Illinois

Hi Rob, Stacy, Larry and Matt,

I wanted to address your questions together as they are all about dental scrap to refine. As you may know, gold used in dental products can come in may grades and this grade and the amount of gold used can vary greatly from tooth to tooth and crown to crown.

Because of the weight variance and how the gold is alloyed with other metals, it is a very difficult process to extract the full amount of precious metal from the scrap. Arch Enterprises has a highly trained metallurgy team to handle the recycling of dental scrap, but it is still a difficult process compared to coins or jewelry.

As a general rule, most gold teeth are 16 karat gold. We have seen, however teeth that are below 10 karat. Gold teeth are typically easier to handle and refine than crowns and bridges. A 10 karat crown would have 41.6% gold while a 22 karat crown would have 91.6% so there can be a significant difference in the gold value even for two crowns of the exact same weight. We pay between 70% - 90% of the fine gold value of dental gold depending on the weight of the gold you send.

For more information please refer to a previous blog post, “What is My Dental Scrap Worth?”

I have 3-4 ounces of Watlow platinum thermocouple wire I would like to sell. How much could you give me and how does the process work? Do I send you the metal to evaluate first? – From John in New Orleans, Louisiana

Hi John,

We can buy and refine platinum thermocouple wire. We will not know the percentage of platinum in the wire without an analysis. However, we have testing equipment that provides this information to us. Once we know the metal content, we can provide you an estimate. Given the costs involved in refining thermocouple wire, we typically pay about 70% of the platinum content.

As for shipping, 4 ounces isn’t too heavy. Therefore, you could send using the U.S. Post Office’s priority mail boxes, but you can use DHL, UPS, or FedEx, without incurring much cost. Visit our website for more information about the shipping process. Also remember to request a signature required upon delivery.

For platinum items we can call you if you would like after we have evaluated the platinum. Please indicate that request on the packing slip with your shipment.

I have 300-400 pounds of used x-ray film, out of jackets, as well as one silver collection bucket from the fixer used to process the x-rays. Could you please give me an estimate of the value of the film and collected silver? Thanks. – From Joseph in Cedar Rapids, Iowa

Hi Joseph,

We can recover the silver from x-ray film and from your silver collection bucket. For the film, we could also help you coordinate freight or transportation.

I think you are talking about a small filter that is called an MRC or CRC that is used to exchange silver from iron from fixer solutions. Depending on the silver concentration from the collection bucket we could return 60%-70% of the silver’s value.

It’s great that you are recycling these items instead of throwing them out. It’s a great way to add a little more money in your pocket, as well as having the peace of mind that the silver will be recycled and reused in such industries as medical, jewelry or auto. Thanks so much Joseph!

I have silver tableware with the following markings: .925 fine silver | 5 troy ounces | id # 060061 | silver town. What do these mean? And what is the value of my items? – From Sue in Newark, New Jersey

Hi Sue,

It is better to have too many markings on your silverware than no markings! Your markings can give us a good indication of the value of your silver. I’ll try and break it down.

.925 fine silver means that your items are 92.5% silver.

5 troy ounces is the weight. Troy ounces are different than your standard ounce that you can find on a postal scale. Average ounces or standard ounces are called avoirdupois ounces.

The formula to change standard ounces to troy ounces is as follows:
Standard Ounce Weight x .912 = Troy Ounce Weight

For example:
16 standards ounces x .912 = 14.59 troy ounces

ID # is the number given to the items by the manufacturer. I am assuming that silver town is the manufacturer, although I cannot find a record of the company. This information might be important if you were trying to sell these items for their retail or collection value instead of their melt value.

We can offer 75% of your tableware’s fine silver content by weight. However, keep in mind that many times the knife blades are stainless steal as silver is too soft to create a reasonable cutting device, obviously this decreases their melt value as steal is not a precious metal. On heavy items like tableware and silverware, we recommend using the US Post Office’s flat rate, priority mail boxes because you can fit a lot of material without worrying about the weight. For more information about refining silverware, visit our website. Hope this information helps!

I have some old goldware with a Hindu or Indian God on the tip and markings on the handle of the spoons, forks and cake knife. Do you know how to tell the age? There are no markings and the only thing I found is a broken clasp with the words Cheney England stamped on it. From Vin in Las Angeles, California

Hi Vin,

You may want to take your items to an antique store or dealer for an appraisal or some sort of assessment if they are really old or not. If you want to sell them for their precious metal melt value then we can help.

We recommend doing the magnet test on your items. Run a strong magnet over your tableware, if the magnet sticks then your items are most likely plated and have no melt value. If your items are not magnetic then you can send them to our refinery and we can test them and determine their gold or silver concentration and call you. Sometimes sterling silver is plated to make look like gold but it is the sterling silver that has value. However, keep in mind that if the material under the plating is stainless steal or something other than sterling silver, we will not be able to buy your items.

We will buy them for their melt value only. If you do send them to us please note on your packing slip that you need a phone call after the items are tested.

I have removed the platinum from catalytic converters. What is the value by weight? From Rob in Pleasant Hill, Oregon

Hi Rob,

We do buy the pellets and honey combs from catalytic converter units that have been “de-canned.” It sounds like your materials are already “de-canned.” Some other information from you would help us give a more accurate estimate for your material such as how many pounds do you have? Do you have loose pellets or honeycomb? Are the catalytic converters from non-diesel engines or diesel engines?

For shipments less than 100 lbs., we go by this payment schedule:

Non-Diesel Engines

For loose pellets from non-diesel engines we pay $3.00 per pound.
For honeycomb material from non-diesel engines we pay $8.00 per pound.

Diesel Engines

For loose pellets from diesel engines we pay $3.00 per pound.
For honeycomb material from diesel engines we pay $3.00 per pound.

If you have greater than 100 lbs. of “de-canned” catalytic converter material, please call or email us for a custom estimate. Hope this information helps!

I have 45 rolls of US War Nickels, which is 1,800 coins. What are these worth? From Nathan in Birmingham, Alabama

Hi Nathan,

Because of the significant amount of copper in War Nickels, the refining process takes quite a bit longer and requires more energy. This makes extraction more expensive and time consuming because the precious metal material has to go through extra treatments for longer periods of time.

We pay 40% of War Nickels’ silver by weight. This percentage is lower than some other coins that do not contain so much copper. Old quarters, dimes and half dollars usually contain more silver and less copper, allowing us to return a higher percentage on these items. Examples of junk silver coins include:

• Mercury Dime (1916-1945)
• Roosevelt Dime (1946-1964)
• Washington Quarter (1932-1964)
• Liberty Half Dollar (1916-1947)
• Franklin Half Dollar (1948-1963)
• Kennedy Half Dollar (1964)
• Kennedy Half Dollar (1965-1970)
• Morgan Dollar (1878-1921)
• Peace Dollar (1921-1935)
• Eisenhower Dollar (1971-1976)

For more information about junk silver coins, visit our website.

I have a sterling silver plated large serving tray and 2 wine goblets. What would the dollar valve be? From Karen in Southern California

Hi Karen,

I am sorry to tell you that we do not buy plated silver items because the silver is plated too thinly to return any money based on the precious metal content. You would be better off trying to sell these items as a serving tray and goblets.

Silver plating techniques have become very advanced so that the plating manufactures use the smallest amount of silver possible to get the desired silver sheen. Many times the silver plating is so thin that it can be scratched off by hard objects such as a coin or paperclip.

If you have a silver item that you don’t know is plated or silver, we recommend running a strong magnetic over the items. Precious metal is NOT magnetic, so if the magnetic sticks then your items do not have value based on their precious metal content. Find out more about our silver refining services on our website.

I have a 12 person set of sterling silver from the late 1800’s. There are roses around the edges with M etched into the pieces and ornate roses on the handle. I have about 10 lbs. of silverware. – From John in Lapeer, Minnesota

Hi John,

Thanks for you inquiry. Though you did not indicate any silver markings, most sterling silver is 925 silver, that is 92.5% silver. In that case, your silverware is ideal for refining because the scrap silver content is valuable. Arch Enterprises can pay you for 75% of your material’s fine silver content by weight.

An important thing to keep in mind for anyone who is selling or refining silverware is that the knives most likely have stainless blades, not silver blades. This would reduce the silver weight of tableware sets. So, it might be a good idea to weigh your materials sans knives to get a more accurate silver value.

Here is an example of how a refiner takes apart sterling silver items including tableware knives on our Arch Enterprises YouTube Channel.

Do you have a facility in TN? Can you evaluate and process large orders? Do you buy and what is the process and how long does this take? – From Roger in Knoxville, Tennessee

Hi Roger,

We have a representative in the Tennessee area but not a facility. Our facility in Missouri can handle large orders. We can take shipments by the ton. With three thermal oxidation processors and three large-scale R4-B rotary furnaces, there is almost no job involving precious metal too large for us to handle.

For large volumes of material we can work with you directly and arrange shipping and/or transportation. For large orders we like to speak with our customers so we both have a better idea about the job we are dealing with. Then we can more accurately estimate how long it will take to process and what the payout will be. Sometimes it is better to send a sample that we can test before refining. Let us know what kind of material you have, and then we can talk about dollar estimates and times.

Visit our website to find out more about our precious metal refining facility.

I have some 10lbs of electrical contacts, some of which are 1inch square X1/8 inch thick. Are these worth refining? From Jesse in Springfield, Missouri

Hi Jesse,

We would offer between $10-$15 per pound of silver-bearing electrical contacts depending on the quality and silver content. Keep in mind that the amount of silver in electrical contacts can vary and we won’t be able to determine an exact amount until they are at our facility, tested and refined.

If they do contain a significant amount of silver, then they would be worth it to send to a silver refiner like Arch Enterprises.

I have a large quantity (about 40+ lbs.) of sterling and 925 silver jewelry. And I have over 1000 dwts of clean scrap gold (no stones). Also let me know if there are any other hidden charges.  From Betty

Hi Betty,

We pay 75% for sterling silver and between 80-90% and sometimes more for large quantities of gold. For those of you that are unfamiliar with “dwts,” this is a unit of measurement used in the industry that is an abbreviation for pennyweight. You might also see “pwt” or “PW” used. Pennyweight is a unit of mass which is the same as 24 grains, 1/240th of a troy pound, 1/20th of a troy ounce, approximately 0.055 ounces or approximately 1.555 grams. We have a previous blog post about other precious metal terms.

It sounds like you may have encountered some other dealers or refineries with hidden charges. With Arch Enterprises all you pay for is shipping. For consumers items like jewelry, we will review your material and mail payment to you in 3 business days or less after the material is received. There are no hidden charges!

I have approx. 5 pounds of “silver flake” extracted from scrap x-ray film 15 years ago. I’m not certain of the purity. I used to sell it to a buyer in the Reno area. Do you have a buyer in the Las Vegas area? – From Jay

We do not have a buyer in the Las Vegas area, but we have people ship silver to us from around the US every day. If you send it to us we can pay you much quicker than a remote buyer or broker since we are the refiner. Please let us know if you would like to send it in, I can obtain an estimate for you. We will be able to pay you 75-85 percent of the silver value for the silver flake.

Because about one-fifth of the world’s silver is used in x-ray film, recycling these items is optimal for the environment. All the silver that Arch Enterprises refines is sold directly back into industries that utilize silver such as the medical industry, photography industry, jewelry industry and more.

I have an 18k gold plated wall sconce light fixture. It retailed for $2300 new. Since it was so expensive, I’m wondering if it has more than just the typical thin layer of gold plating and if so, would it be possible to salvage the gold? – From David

Hi David,

Without seeing or testing the light fixture I cannot say for certain if the gold on your light fixture is more than a plating. However, usually the retailer and/or manufacturer will let the buyer know if an item contains a significant amount of gold because it would be a major selling point for them.

Also, it can be easy to get hung up on the retail price of an item, but it is very different from the melt value of the item. Even though the retail price is high does not mean that price translates to the precious metal value, which is the only value that refiners take into consideration.

If the piece is not damaged, I would guess that the retail value of it would be worth more than the precious metal value. Arch Enterprises would not be able to offer you a return for the gold plated item because there would not be enough gold to extract. I would check to see if your wall sconce is a brand name and even if you could sell pieces of it separately. Hope this helps!

I have thermocouple wire to sell/refine. Total weight is about 2000 grams. Half is pure platinum, the other half is 87% platinum, 13% Rhodium. Do you buy from the general public. Also, do you pay for the rhodium content or only the platinum? – Steven from Virginia

Hi Steven,

We are a precious metal refiner that does buy from the public. We will pay you for 70% of the fine platinum content by weight. We do pay on rhodium, but the rhodium amount you described is too small to offer a payment. You can find more information about our platinum recovery services on our website.

How does your medical x-ray film recycling work? Do I have to send in my x-rays? – Sara in Memphis, TN

We recommend finding a dealer that will come to you. Arch will conduct on-site purging of x-rays and x-ray refining in eight states: Alabama, Northern Florida, Illinois, Iowa, Kansas, Missouri, Oklahoma and Tennessee. This just makes things easier for you because we will bring all the necessary materials such as Gaylord boxes, skids and drums.

Another feature to look for in your refining service is if they are HIPPA compliant and offer Certificates of Destruction and documentation of general liability and environment insurance policies. You can also find a service that will sort and remove the x-ray films for you.

If you do not live within the above locations, you can send in your x-rays to a refiner, but the shipping costs will fall on you. Look around your area and try and find a refiner that will conduct on-site x-ray film recycling.

I have 7.7 silver from developing negatives in printing, how much would this bring if I took it to refine? – Trisha in Pittsburg, KS

Hi Trisha,

If am not sure if your silver is from a silver recovery unit and is in pounds or ounces. Let’s assume it is silver flake from an electrolytic silver recovery unit, in this case it may be very rich in silver content by weight. We can refine it and return 75%-90% of the silver value back to you via check depending on the actual quantity and quality. If you would like us to test a sample please let us know.

Can you give me a quote for processing electrical contacts that have been removed from busbars? – Chad in Abilene, TX

Hi Chad,

We would offer between $10-$15 per pound depending on the quality and silver content. For those of you who do not know what busbars are, they are used in electrical power distribution and are usually made of copper or aluminum. So, you may be asking yourself where the silver content comes in. Often the joints between high-current bus sections have silver-plated surfaces to reduce contact resistance. These scrap silver electrical contacts can be ideal for refining.

Does silver get black when it gets old and dirty? And does this affect the melt value? – John in Frenso, CA

When silver comes in contact with oxygen it oxidizes or turns black, this process is called tarnishing. No matter what form of silver your items are, sterling silver and pure silver alike tarnishes. The black/greenish substance that rubs off is called silver sulfate. Silver tarnishes not based on the type of silver, but based on the silver item’s environment. When materials like wool, rubber, fossil fuels and latex come in contact with silver it causes the item to tarnish more quickly. Also, the climate can affect this process. High humidity results in silver tarnishing faster and results in a darker and blacker form of tarnish build on the item.

As for the second part of the question, tarnish does NOT affect the melt value of items. Refiners will take silver items, not matter the condition. If you have scrap metal pieces, it could be to your benefit to not clean them. Tarnish does not just lay on the surface of silver, it is chemically bound to it. Harsh silver cleaning treatments could remove some of the silver content and affect its value.

As a warning, you should never clean silver with other metal items. A chemical reaction might occur resulting in a loss of silver off the item.

Note: If you have silver coins, you may want to be more careful in how you clean them. If you use a harsh cleaner or applicator you could destroy the original surface of the coin, significantly decreasing its numismatic value (more than its precious metal value). Consulting a coin dealer before you clean silver coins may be in your best interest.

We are clearing out our office and realized we still have about 160 pounds worth of old negatives from our monthly publication. Wonder if these are worth recycling? – Dixie in Berkeley, CA

Hi Dixie,

The amount of negatives you have is not enough for us to pay you for them. This is because the cost for us to extract the silver is more than what the precious metal would be worth. We will gladly recycle them but you would have to pay the shipping charges to get them to our facility.

I have quite a few silver coins: 33 quarters and 39 half dollars. I’ve been watching silver prices and thought now would be a good time to sell these. How much are these silver coins worth refined? – Terri in Carrollton, Texas

Hi Terri,

You’re right, silver prices are at an all time high and now would be an ideal time to add a little extra money to your pocketbook when you’re ready to sell. The first thing to look at is if your coins are “junk silver” coins where the silver content is worth more than their numismatic value. The most common quarters and half dollars we see at Arch are as follows:

• (1932-1964) Washington Quarter
• (1916-1947) Liberty Half Dollar
• (1948-1963) Franklin Half Dollar
• (1964) Kennedy Half Dollar
• (1965-1970) Kennedy Half Dollar
• (1920-1967) Canadian Quarter
• (1920-1967) Canadian Half Dollar

If your silver coins are in-fact junk silver and you have 33 quarters and 39 half dollars we would estimate their melt value to be $258 per pound based on a silver price of $17.75/troy ounce. We will retain a small 10% fee of the $258.

I have a 51 piece 24K gold plated flatware set that is supposed to contain 63 pieces (I’m missing 12 salad forks.) If it were a full set, it’s only going for about $50 on E-Bay. It is not marked 24K, but the certificate included with the set states they guarantee it to be so. So let’s just assume this to be true. Would I be better off to sell this online for $40 or $50 or sell it as gold scrap? Thanks. - Mark in Las Vegas, Nevada

Gold Plated Flatware

Hi Mark:

Unfortunately, plated gold flatware typically only contains a microscopic layer of gold. In most cases, the flatware is plated so thinly that it costs more in energy and time to remove the gold than the gold is worth. Therefore, most precious metal refiners cannot offer payment for gold plated items.

However, the value of your flatware depends greatly on the metal underneath the gold plating. In some cases, manufacturers plated the gold over sterling silver. If your set is gold on sterling silver, the set should be worth more than $50.00 for the silver value (market price of silver and weight depending). If they are gold plate on stainless or copper or another base metal you are best to sell them on ebay.

To give you a feel for the melt value, we buy sterling silver by weight and pay around $175 a pound at this time. If you want to determine what metal is under the gold plating, you can send us one piece to test in our XRF analytical lab to determine if it is silver underneath the gold or you might be able to dig up some information by calling/writing the manufacturer.

You can see how the XRF machine works Arch Enterprises Video Site.

I have some old silver coins that I would like to sell.  What is the best way to go about this? — Amber in Pensacola, FL

If you are looking into selling silver or gold coins, the first step to consider is whether or not your coins have numismatic value. Coins with numismatic value are those that are worth more than their precious metal content. The value of rare coins is determined by four criteria:

1. Rarity
2. Quality
3. Grade
4. Popularity

For these types of coins, we recommend working with a rare coin dealer as you don’t want to sell them for their melt value.

Other silver coins are commonly referred to as “junk silver.” These coins have no value beyond their silver content. In the United States, most silver coins minted before 1964 have a fair amount of silver content and have value based on this precious metal content.

Here are a few examples of the most common junk silver coins we at Arch see.

• (1942-1945) Silver War Nickel
• (1916-1945) Mercury Dime
• (1946-1964) Roosevelt Dime
• (1932-1964) Washington Quarter
• (1916-1947) Liberty Half Dollar
• (1948-1963) Franklin Half Dollar
• (1964) Kennedy Half Dollar
• (1965-1970) Kennedy Half Dollar
• (1878-1921) Morgan Dollar
• (1921-1935) Peace Dollar
• (1971-1976) Eisenhower Dollar
• 1920-1967 Canadian Dime
• 1920-1967 Canadian Quarter
• 1920-1967 Canadian Half Dollar
• 1935-1967 Canadian Dollar

Is there any way to tell if my platinum ring is pure platinum? — Beth in Stillwater, OK

The two most common purities of platinum used in jewelry are:

Plat - 950 Plat is considered nearly pure platinum and usually contains 95% platinum and 5% iridium.  It is quite expensive and typically the highest grade of platinum available for jewelry making.

IridPlat - This platinum is 90% pure platinum with 10% other metals mixed in…typically iridium. These rings can be marked with a hallmark of “.90 Plat” as well and therefore have a slightly lower melt value than their purer platinum counterparts.

Obviously pure platinum will yield higher returns, however at around $1,322.00/troy ounce, platinum alloyed with other materials can return a surprisingly high melt value.

Is there an easy way to tell what grade a silver item is? — Austin in Naperville, IL

The easiest way without testing equipment or chemicals is to look for hallmarks that indicate whether an item is sterling silver.

You may notice small markings on items, usually found in the inside of rings, on clasps of necklaces or on the back of plates. These markings are called hallmarks and can indicate what type of metal you have and how much it may be worth. They are often extremely small so you may need a magnifying glass to read them.  As long as you bought the item from a reputable source, they tend to be very accurate.

Sterling silver items are called Sterling, Sterling Silver or Solid Silver and they are typically marked with 925, 925/1000, 92.5 or .925. The abbreviation SS is also commonly seen for sterling silver. These markings reveal that the item is made from 925 parts out of 1000 of fine silver, the minimum allowable quality for an item to be considered sterling. It is the law that the name or U.S. registered trademark of the company or person is on a quality marked silver item.  We will often ask people the brand and make of their silverware so that we can help them determine whether their silver flatware is sterling or plated although our testing equipment ultimately tells us for sure once we get the items into our facility.

For older pieces, silver may come in many more varieties.  800 silver which was 800 parts silver was very common outside of the United States and before the 1900s as were other 750, 825, and 830.

Another common form of silver on older items is 900.  It refers to coin silver which is 90% silver and 10% copper.  It’s composition was dictated by United States FTC guidelines and established in the 1820s for minting silver coinage.  As such, it is often called “coin silver.”

For further information, see video on refining silver flatware.

I am an avid metal detector user and am studying up on some of the industry terminology as I prepare to get some of the items I have found refined. For example, what is meant by “gold filled”, “troy ounce” and “pennyweight.” — Rick in Louisiana, MO

Thank you for you inquiry, following are some of the common terms used in the precious metal refining industry.

Carat – a unit of weight for gems
Karat (K, kt) – is measure of purity for gold
Fineness – the proportion of pure precious metal in an alloy, often expressed in parts per thousand
Fine Weight – the metallic weight of a coin, ingot or bar
Gross Weight – the total weight of an item, including the alloying metal
Gold Standard – a monetary system in which a region’s common medium of exchange are paper notes that are normally freely convertible into pre-set, fixed quantities of gold
Hallmark (plate mark) – an official mark or stamp indicating a standard of purity, used in marking gold and silver articles.
Luster – a substance, as a coating or polish, used to impart sheen or gloss
Ounce – a unit of weight. In the precious metals industry, an ounce means a troy ounce equal to 31.1035 grams
Spread – the difference between the buying price and the selling price of a precious metal
Troy Ounce – a unit of weight equal to 480 grains or 1/12 of a pound
Grain – the smallest unit of weight
Face Value – the nominal dollar amount assigned to a security by the issuer
Retail Value – the sale of goods or articles individually or in small quantities directly to the consumer
Pennyweight (dwt, pwt, PW) – a unit of mass which is the same as 24 grains, 1/240th of a troy pound, 1/20th of a troy ounce, approximately 0.055 ounces or approximately 1.555 grams
Hardness (HV) – sometimes called “scratch resistance,” the Vickers Hardness scale tests hardness of a metal by pushing a pointed object into the surface with a specific load and gauging penetration
Metal - any category of electropositive elements that usually have a shiny surface; typical metals are from salts with non-metals, basic oxides with oxygen and alloys with one another
Salt – crystalline chemical compound formed from the neutralization of an acid by a base containing a metal or group acting like a metal
EPNS – electroplated nickel silver or silver plate
Gold Filled (G.F.) – an item that has a thin outer layer of gold over a base metal. Items must be at least 1/20 gold by weight to be called gold filled
Gold Rolled (R.G.P) – Popular during the 19th century where a very thing sheet of solid gold is laminated to a lesser metal then fused together
Gold Plating – also referred to as electroplate (GEP), is a process where one metal is coated with another metal using electricity
Pinchbeck – gold substitute made with a combination of 9 karat gold, copper and zinc
Vermeil – usually gold plated sterling silver

Are there any precious metal terms we left out that you would like to know?

Are there differences in melt values between White Gold and Yellow Gold? — Sue in Cleavland, Ohio

For the most part, gold jewelry of the same karat value will have about the same melt value whether it is white gold or yellow gold. Aside from 24 karat (pure gold), all other karats of gold are alloys that include some other metals in them.  For example, an 18 karat gold item is about 75% gold alloyed with other metals that in turn affect the item’s color and hardness. Palladium and nickel are often used to create white gold while copper and silver are used for yellow gold.

Of course, nickel has dermatological health issues with it and palladium is expensive, so some white gold alloys actually include magnesium or chromium. Today, you are more likely to find rhodium plated gold as this metal often provides the look that consumers want, but the cost is so high that it is typically just plated onto the gold.  As a general rule, there is usually not a significant difference in melt value between an 18 karat yellow gold ring and an 18 karat white gold ring of the same weight.

24 karat gold is 99.84% gold (not achievable in white gold)
22 karat gold is 91.52% gold  (not achievable in typical white gold)
20 karat gold is 83.33% gold
18 karat gold is 74.88% gold
14 karat gold is 58.24% gold
10 karat gold is 41.60% gold
9 karat gold is 37.44% gold

I am a dentist and have some old gold crowns that I have recently taken out of patients mouths. At what point does it become profitable to send them in for refining.  Do I need to have 20-30 crowns before it makes sense? — Dr. Norton

It can be hard to judge how much precious metal is in dental gold scrap because so many different alloys are used in the industry. Typically dental gold alloys range in the 10 to 22 karat range with 16 karat gold being the most common.  A 10 karat crown would have 41.6% gold while a 22 karat crown would have 91.6% so there can be a big difference in value even for two crowns of the exact same weight.

Dentists also use a lot of silver-colored alloys for crowns and bridges that can have high precious metal content.   Despite their color, they may have a fairly sizeable proportion of gold or be made with other precious metals like platinum or palladium.  Unfortunately, without testing equipment, it is often difficult to tell the difference between these precious alloys and other “white” alloys that have no scrap value whatsoever.

Of course, the price of gold on the day your gold crowns are received for refining will also impact the value.

The last major variable is who you are going to sell this scrap to.  If you sell it to the same company that is supplying you with other dental products, then they are probably just going to take a cut and pass the crowns to a precious metal refiner.    However, if you only have one or two, they may batch it with crowns and bridges from other dentists as many refiners will not accept small quantities.
If you work with us at Arch Enterprises, you do not need a minimum quantity of dental gold to receive payment. We will evaluate your items and pay you based on the weight and quality of the gold in the crowns. We have analytic equipment that can evaluate each piece individually for the gold, silver, platinum and palladium content. We pay 85% of the metal value back to you in a check in 2-3 business days.  We are endorsed by dental associations and have worked regularly with many dentists.

If you need some basic guidelines, let’s assume that the average crown weighs 2.5 grams or about .08 troy ounces (the value in which gold is traded) and that the price for the day is $1,000 per troy ounce.  Based on this, a

• A 2.5 gram crown made of 10 karat alloy (41.6% gold) would be worth (.08 x.416 x 1,000) or $33.28 before refining costs of approximately 15%
• A 2.5 gram crown made of 16 karat alloy (66.6% gold) would be worth (.08 x.666 x 1,000) or $53.28 before refining costs of approximately 15%
• A 2.5 gram crown made of 22 karat alloy (66.6% gold) would be worth (.08 x.916 x 1,000) or $73.28 before refining costs of approximately 15%

I have a 14 karat gold ring that weighs 0.3 ounces on my postal scale. Can you tell me what the value of gold in this ring is and what I should expect to get for it from a refiner? - Bob in Columbia, MO

To determine the value of gold in your 14K gold ring, there are a few issues to consider:

• Weight - Unfortunately postal scales are not accurate enough when one is considering the valuing of a gold item, but in this case, we measured the ring that you sent in and found it to actually did weigh 8 grams or 0.2822 ounces.

• Percentage of Gold - 14K Gold is supposed to contain 58.24% gold while the rest is typically made up of copper, zinc, nickel, and other metals.  We ran your ring through our X-Ray analyzer and found that it actually contained 66.89% gold.  See Video Clip.

• Price of Gold - On July 22, the price of gold closed at $951.42 per ounce.  Keep in mind that gold is valued in troy ounces and Americans typically think of an ounce as what is termed a avoirdupois ounce.  Troy ounces actually weigh a little more than avoirdupois ounces so you actually have less than .2822 troy ounces of gold.  To get your value in troy ounces, you would actually have to multiply .2822 avoirdupois ounces by .912.

So, the amount of pure gold in your particular 14K gold ring weighing .2822 avoirdupois ounces with a gold percentage of 66.89% was 0.18877 ounces.  To figure out its value in troy ounces, we mulitplied this number by .912 to get 0.172 Troy Ounces.  Mulitplying this by today’s rate for gold of $951.52 and your gold is worth $163.79.

Of course, the refiner needs to melt this into a form that someone wants and make a profit so you should expect anywhere from 70% to 90% of this value from a refiner.  Most refiners won’t deal in quantities this low.  At Arch Enterprises, we do, but we pay on a scale that ranges from 80% for those who send in less than 1 ounce of pure gold to over 90% for those sending in over 2 ounces.

My husband and I own a jewelry and watch repair store and for years have been saving the spent watch batteries for recycling. We understand there is some silver content in many of these batteries, but mainly we just want to know that they are recycled. What can we do with these? - Gwen in Memphis, TN

Refiner Response - Gwen, it is admirable of you to consider the environment when thinking of how to dispose of these spent watch batteries. Many watch batteries are actually referred to in the industry as “silver oxide batteries” and as the name implies, they contain a small amount of silver. Most precious metal refiners are not going to be too excited about recycling these unless you have hundreds of pounds of them. Since we at Arch Metal Refining process so much silver, we are able to pay out approximately $10 to $15 per pound depending on the quality and quantity of batteries you have to refine. Obviously, the primary benefit is knowing that these batteries are being recycled and disposed of properly, but the fact that you can make a little money on them can be an added bonus.